int main( )
{
int c;
extern int brace, brack, paren;
while ((c = getchar()) != EOF){
if (c == '/'){
if((c = getchar()) == '*')
in_comment();
else
search(c);
}else if(c == '\'' || c == '"')
in_quote(c);
else
search(c);
if(brace < 0){
printf("Unbalanced braces\n");
brace = 0;
}else if(brack < 0){
printf("Unbalanced bracets\n");
brack = 0;
}else if(paren < 0){
printf("Unbalanced parentheses\n");
paren = 0;
}
}
if(brace > 0)
printf("Unbalanced braces\n");
if(brack > 0)
printf("Unbalanced brackets\n");
if(paren > 0)
printf("Unbalanced parenthese\n");
return 0;
}
/* C语言程序初步的语法检查 */
main(void)
{
int c;
extern int brace, brack, paren;
while ((c = getchar()) != EOF) {
if (c == '/') {
if ((c = getchar()) == '*')
in_comment(); /* 评论内 */
else
search(c);
} else if (c == '\'' || c == '"')
in_quote(c); /* 引用内 */
else
search(c);
if (brace < 0) { /* 输出错误 */
printf("Unbalanced braces\n"); /* 大括号 */
brace = 0;
} else if (brack < 0) {
printf("Unbalanced brackets\n"); /* 方括号 */
brack = 0;
} else if (paren < 0) {
printf("Unbalanced parentheses\n"); /* 圆括号 */
paren = 0;
}
}
if (brace > 0) /* 输出错误 */
printf("Unbalanced braces\n");
if (brack > 0)
printf("Unbalanced brackets\n");
if (paren > 0)
printf("Unbalanced parenthess\n");
}
main()
{
int c, d;
extern int brace, brack, paren;
brace = brack = paren = 0;
extern nml;
while( ( c = getchar() ) != EOF )
{
if ( c == '\n' )
++nml;
else if ( c == '/' )
{
if ( ( c = getchar() ) == '*' )
in_comment();
else if ( c == '\n' )
++nml;
else search( c );
}
else if ( c == '\'' || c == '"' )
in_quote( c );
else
search( c );
if ( brace < 0 )
{
printf("Unbalance barces at line %d.\n", nml);
brace = 0;
}
else if ( brack < 0 )
{
printf("Unbalance brackeks at line %d.\n", nml);
brack = 0;
}
else if ( paren < 0 )
{
printf("Unbalance parentheses at line %d.\n", nml);
paren = 0;
}
}
if ( brace > 0 )
printf("Unbalance barces.\n");
if ( brack > 0 )
printf("Unbalance brackets.\n");
if ( paren > 0 )
printf("Unbalance parentheses.\n");
}
void rcomment(int c) {
int d;
if (c=='/') {
if ((d=getchar())=='*')
in_comment();
else if (d=='/') {
putchar(c);
rcomment(d);
} else {
putchar(c);
putchar(d);
}
} else if (c=='\'' || c=='"')
echo_quote(c);
else
putchar(c);
}
/*rcomment: czytaj każdy znak, usuń komentarze*/
void rcomment(int c)
{
int d;
if (c == '/')
if ((d = getchar()) == '*')
in_comment(); /*początek komentarza*/
else if (d == '/') {
putchar(c); /*drugi znak / */
rcomment(d);
} else {
putchar(c); /*to nie jest komentarz ;)*/
putchar(d);
}
else if (c == '\'' || c == '"')
echo_quote(c); /*to początek stałej*/
else
putchar(c); /*to nie jest komentarz*/
}
/* rcomment: read each character, remove the comments */
void rcomment(int c)
{
int d;
if (c == '/')
if ((d = getchar()) == '*')
in_comment(); /* beginning comment */
else if (d == '/') { /* another slash */
putchar(c);
rcomment(d);
} else {
putchar(c); /* not a comment */
putchar(d);
}
else if (c == '\'' || c == '"')
echo_quote(c); /* quote begins */
else
putchar(c); /* not a comment */
}
/* 阅读每个字节，移除注释 */
void rcomment(int c)
{
int d;
if (c == '/')
if ((d = getchar()) == '*')
in_comment(); /* 开始注释 */
else if (d == '/') {
putchar(c); /* 另一个斜杠 */
rcomment(d);
} else {
putchar(c); /* 不是注释 */
putchar(d);
}
else if (c == '\'' || c == '"') /* 引号中的内容原样输出 */
echo_quote(c); /* 引用开始 */
else
putchar(c); /* 不是注释 */
}
/*rcomment:处理读入的每个字符，删除注释，首先是搜索起始标志*/
void rcomment(int c)
{
int d; /*用来储存c后面读入的一个字符*/
if(c=='/') /*当遇到一个/时，需要进行后续的判断*/
{
if((d=getchar())=='*') /* 再读入一个字符，如果是*号，d已经读入，后续不需读入，而且必须输出 */
in_comment(); /* 说明进入注释，调用in_comment()函数寻找结束标志，删除注释 */
else if (d=='/') /* 如果又出现一个/ */
{
putchar(c); /*则c一定不是属于注释，把c原样输出*/
rcomment(d); /*****递归调用rcomment函数，继续对d进行检测，而实际上只是c==‘/’的情况******/
}
else /* 第一个/出现后，之后读入的一个字符，不是/也不是* */
{
putchar(c); /*c,d均不属于注释，c，d均原样输出*/
putchar(d);
}
}
else if(c=='\''||c=='"') /*出现单引号或双引号*/
echo_quote(c);/*调用echo_quote函数处理*/
else /*其他情况表示即不是/也不是引号*/
putchar(c);/*原样输出*/
}
int findclose(int c) {
int d;
while((d = getchar())!=EOF) {
if(d == '{') {
findclose('}');
}
else if(d == '[') {
findclose(']');
}
else if(d == '(') {
findclose(')');
}
else if(d == '/') {
if ((d = getchar()) == '*')
in_comment();
}
else if(d == '\'' || d == '"') {
echo_quote(d);
}
else if(c == d) {
return 0;
}
else if(d == '}' || d == ']' || d == ')') {
printf("find %c, unexpected %c\nexit.\n", c, d);
_exit(-1);
}
}
if(c != 255) {
printf("not match, %c\n", c);
_exit(-1);
}
printf("ok\n");
return 0;
}